Find a used Chord Dave, you shuold be able to get one in your budget or very close to it, then you will never need another DAC upgrade. I sold mine a few months back for $6500 canadian under your $5000usd budget. Thats a world class DAC ($15000usd retail) for a fraction of the cost new and you wont be disapionted. Chord is not replaceing the Dave this year/next year acording to my dealer so its still current.
Now that i have moved i'll be saving up for another one.